diff --git a/Marlin/src/HAL/AVR/HAL.h b/Marlin/src/HAL/AVR/HAL.h
index ce15ed29fb3a..aa6a32132032 100644
--- a/Marlin/src/HAL/AVR/HAL.h
+++ b/Marlin/src/HAL/AVR/HAL.h
@@ -122,12 +122,16 @@ inline uint8_t HAL_get_reset_source() { return MCUSR; }
 
 inline void HAL_reboot() {}  // reboot the board or restart the bootloader
 
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wunused-function"
-extern "C" {
-  int freeMemory();
-}
-#pragma GCC diagnostic pop
+#if GCC_VERSION <= 50000
+  #pragma GCC diagnostic push
+  #pragma GCC diagnostic ignored "-Wunused-function"
+#endif
+
+extern "C" int freeMemory();
+
+#if GCC_VERSION <= 50000
+  #pragma GCC diagnostic pop
+#endif
 
 // ADC
 #ifdef DIDR2
diff --git a/Marlin/src/HAL/DUE/HAL.h b/Marlin/src/HAL/DUE/HAL.h
index 88ace5957535..395ca4ccc971 100644
--- a/Marlin/src/HAL/DUE/HAL.h
+++ b/Marlin/src/HAL/DUE/HAL.h
@@ -153,10 +153,16 @@ void HAL_init();
 //
 void _delay_ms(const int delay);
 
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wunused-function"
+#if GCC_VERSION <= 50000
+  #pragma GCC diagnostic push
+  #pragma GCC diagnostic ignored "-Wunused-function"
+#endif
+
 int freeMemory();
-#pragma GCC diagnostic pop
+
+#if GCC_VERSION <= 50000
+  #pragma GCC diagnostic pop
+#endif
 
 #ifdef __cplusplus
   extern "C" {
diff --git a/Marlin/src/HAL/ESP32/HAL.h b/Marlin/src/HAL/ESP32/HAL.h
index ebc16c9525e7..5ef13e0c21d4 100644
--- a/Marlin/src/HAL/ESP32/HAL.h
+++ b/Marlin/src/HAL/ESP32/HAL.h
@@ -100,10 +100,16 @@ inline void HAL_reboot() {}  // reboot the board or restart the bootloader
 
 void _delay_ms(int delay);
 
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wunused-function"
+#if GCC_VERSION <= 50000
+  #pragma GCC diagnostic push
+  #pragma GCC diagnostic ignored "-Wunused-function"
+#endif
+
 int freeMemory();
-#pragma GCC diagnostic pop
+
+#if GCC_VERSION <= 50000
+  #pragma GCC diagnostic pop
+#endif
 
 void analogWrite(pin_t pin, int value);
 
diff --git a/Marlin/src/HAL/HAL.h b/Marlin/src/HAL/HAL.h
index 5eca2f7eacfe..9eefda8fb1e2 100644
--- a/Marlin/src/HAL/HAL.h
+++ b/Marlin/src/HAL/HAL.h
@@ -23,6 +23,10 @@
 
 #include "platforms.h"
 
+#ifndef GCC_VERSION
+  #define GCC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
+#endif
+
 #include HAL_PATH(.,HAL.h)
 
 #ifdef SERIAL_PORT_2
diff --git a/Marlin/src/HAL/LINUX/HAL.h b/Marlin/src/HAL/LINUX/HAL.h
index 1c8dbfd4dcfe..729f6c856e19 100644
--- a/Marlin/src/HAL/LINUX/HAL.h
+++ b/Marlin/src/HAL/LINUX/HAL.h
@@ -79,10 +79,16 @@ extern HalSerial usb_serial;
 inline void HAL_init() {}
 
 // Utility functions
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wunused-function"
+#if GCC_VERSION <= 50000
+  #pragma GCC diagnostic push
+  #pragma GCC diagnostic ignored "-Wunused-function"
+#endif
+
 int freeMemory();
-#pragma GCC diagnostic pop
+
+#if GCC_VERSION <= 50000
+  #pragma GCC diagnostic pop
+#endif
 
 // ADC
 #define HAL_ADC_VREF           5.0
diff --git a/Marlin/src/HAL/LPC1768/HAL.h b/Marlin/src/HAL/LPC1768/HAL.h
index cb637e715dda..51a13389b1e6 100644
--- a/Marlin/src/HAL/LPC1768/HAL.h
+++ b/Marlin/src/HAL/LPC1768/HAL.h
@@ -107,10 +107,16 @@ extern "C" volatile uint32_t _millis;
 //
 // Utility functions
 //
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wunused-function"
+#if GCC_VERSION <= 50000
+  #pragma GCC diagnostic push
+  #pragma GCC diagnostic ignored "-Wunused-function"
+#endif
+
 int freeMemory();
-#pragma GCC diagnostic pop
+
+#if GCC_VERSION <= 50000
+  #pragma GCC diagnostic pop
+#endif
 
 //
 // ADC API
diff --git a/Marlin/src/HAL/SAMD51/HAL.h b/Marlin/src/HAL/SAMD51/HAL.h
index 7cb3635bd7c9..ff9310114641 100644
--- a/Marlin/src/HAL/SAMD51/HAL.h
+++ b/Marlin/src/HAL/SAMD51/HAL.h
@@ -135,10 +135,16 @@ void HAL_idletask();
 //
 FORCE_INLINE void _delay_ms(const int delay_ms) { delay(delay_ms); }
 
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wunused-function"
+#if GCC_VERSION <= 50000
+  #pragma GCC diagnostic push
+  #pragma GCC diagnostic ignored "-Wunused-function"
+#endif
+
 int freeMemory();
-#pragma GCC diagnostic pop
+
+#if GCC_VERSION <= 50000
+  #pragma GCC diagnostic pop
+#endif
 
 #ifdef __cplusplus
   extern "C" {
diff --git a/Marlin/src/HAL/STM32/HAL.h b/Marlin/src/HAL/STM32/HAL.h
index c92c8890ea96..16dc7a453994 100644
--- a/Marlin/src/HAL/STM32/HAL.h
+++ b/Marlin/src/HAL/STM32/HAL.h
@@ -140,15 +140,19 @@ void _delay_ms(const int delay);
 
 extern "C" char* _sbrk(int incr);
 
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wunused-function"
+#if GCC_VERSION <= 50000
+  #pragma GCC diagnostic push
+  #pragma GCC diagnostic ignored "-Wunused-function"
+#endif
 
 static inline int freeMemory() {
   volatile char top;
   return &top - reinterpret_cast<char*>(_sbrk(0));
 }
 
-#pragma GCC diagnostic pop
+#if GCC_VERSION <= 50000
+  #pragma GCC diagnostic pop
+#endif
 
 //
 // ADC
diff --git a/Marlin/src/HAL/STM32F1/HAL.h b/Marlin/src/HAL/STM32F1/HAL.h
index 2880865dbbcc..06f75662cffa 100644
--- a/Marlin/src/HAL/STM32F1/HAL.h
+++ b/Marlin/src/HAL/STM32F1/HAL.h
@@ -189,8 +189,10 @@ inline void HAL_reboot() {}  // reboot the board or restart the bootloader
 
 void _delay_ms(const int delay);
 
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wunused-function"
+#if GCC_VERSION <= 50000
+  #pragma GCC diagnostic push
+  #pragma GCC diagnostic ignored "-Wunused-function"
+#endif
 
 /*
 extern "C" {
@@ -213,7 +215,9 @@ static int freeMemory() {
   return &top - reinterpret_cast<char*>(_sbrk(0));
 }
 
-#pragma GCC diagnostic pop
+#if GCC_VERSION <= 50000
+  #pragma GCC diagnostic pop
+#endif
 
 //
 // ADC
diff --git a/Marlin/src/HAL/STM32_F4_F7/HAL.h b/Marlin/src/HAL/STM32_F4_F7/HAL.h
index 00a65de7926f..85fbf098ff85 100644
--- a/Marlin/src/HAL/STM32_F4_F7/HAL.h
+++ b/Marlin/src/HAL/STM32_F4_F7/HAL.h
@@ -162,15 +162,19 @@ int freeMemory() {
 }
 */
 
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wunused-function"
+#if GCC_VERSION <= 50000
+  #pragma GCC diagnostic push
+  #pragma GCC diagnostic ignored "-Wunused-function"
+#endif
 
 static inline int freeMemory() {
   volatile char top;
   return &top - reinterpret_cast<char*>(_sbrk(0));
 }
 
-#pragma GCC diagnostic pop
+#if GCC_VERSION <= 50000
+  #pragma GCC diagnostic pop
+#endif
 
 //
 // ADC
diff --git a/Marlin/src/HAL/TEENSY31_32/HAL.h b/Marlin/src/HAL/TEENSY31_32/HAL.h
index 8ab358e9e1e5..9156aadb4de0 100644
--- a/Marlin/src/HAL/TEENSY31_32/HAL.h
+++ b/Marlin/src/HAL/TEENSY31_32/HAL.h
@@ -97,12 +97,16 @@ inline void HAL_reboot() {}  // reboot the board or restart the bootloader
 
 FORCE_INLINE void _delay_ms(const int delay_ms) { delay(delay_ms); }
 
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wunused-function"
-extern "C" {
-  int freeMemory();
-}
-#pragma GCC diagnostic pop
+#if GCC_VERSION <= 50000
+  #pragma GCC diagnostic push
+  #pragma GCC diagnostic ignored "-Wunused-function"
+#endif
+
+extern "C" int freeMemory();
+
+#if GCC_VERSION <= 50000
+  #pragma GCC diagnostic pop
+#endif
 
 // ADC
 
diff --git a/Marlin/src/HAL/TEENSY35_36/HAL.h b/Marlin/src/HAL/TEENSY35_36/HAL.h
index 2b735d6224f4..04151e837861 100644
--- a/Marlin/src/HAL/TEENSY35_36/HAL.h
+++ b/Marlin/src/HAL/TEENSY35_36/HAL.h
@@ -103,12 +103,16 @@ inline void HAL_reboot() {}  // reboot the board or restart the bootloader
 
 FORCE_INLINE void _delay_ms(const int delay_ms) { delay(delay_ms); }
 
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wunused-function"
-extern "C" {
-  int freeMemory();
-}
-#pragma GCC diagnostic pop
+#if GCC_VERSION <= 50000
+  #pragma GCC diagnostic push
+  #pragma GCC diagnostic ignored "-Wunused-function"
+#endif
+
+extern "C" int freeMemory();
+
+#if GCC_VERSION <= 50000
+  #pragma GCC diagnostic pop
+#endif
 
 // ADC
 
diff --git a/Marlin/src/HAL/TEENSY40_41/HAL.h b/Marlin/src/HAL/TEENSY40_41/HAL.h
index 1e0043342dd6..28f511631eea 100644
--- a/Marlin/src/HAL/TEENSY40_41/HAL.h
+++ b/Marlin/src/HAL/TEENSY40_41/HAL.h
@@ -120,12 +120,16 @@ uint8_t HAL_get_reset_source();
 
 FORCE_INLINE void _delay_ms(const int delay_ms) { delay(delay_ms); }
 
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wunused-function"
-extern "C" {
-  uint32_t freeMemory();
-}
-#pragma GCC diagnostic pop
+#if GCC_VERSION <= 50000
+  #pragma GCC diagnostic push
+  #pragma GCC diagnostic ignored "-Wunused-function"
+#endif
+
+extern "C" uint32_t freeMemory();
+
+#if GCC_VERSION <= 50000
+  #pragma GCC diagnostic pop
+#endif
 
 // ADC
 
diff --git a/Marlin/src/libs/duration_t.h b/Marlin/src/libs/duration_t.h
index 9c1d72dfaff3..bd654b7bad1e 100644
--- a/Marlin/src/libs/duration_t.h
+++ b/Marlin/src/libs/duration_t.h
@@ -106,8 +106,10 @@ struct duration_t {
     return this->value;
   }
 
-  #pragma GCC diagnostic push
-  #pragma GCC diagnostic ignored "-Wformat-overflow"
+  #if GCC_VERSION <= 50000
+    #pragma GCC diagnostic push
+    #pragma GCC diagnostic ignored "-Wformat-overflow"
+  #endif
 
   /**
    * @brief Formats the duration as a string
@@ -167,5 +169,7 @@ struct duration_t {
     }
   }
 
-  #pragma GCC diagnostic pop
+  #if GCC_VERSION <= 50000
+    #pragma GCC diagnostic pop
+  #endif
 };